Which
Is More Important: Systolic Hypertension or Diastolic Hypertension?
There is now considerable evidence to support the concept that systolic
hypertension is a good predictor of future cardiovascular disease. Medscape
Cardiology 7(1) 2003

Use "Biopac Lesson -- ECG and Pulse Measurements"
to record pulse tracings.

Try to record data as called for in "Investigative
Procedure" Benson (also refer to Benson for sample pulse tracings).

Examine pulse tracings to see the dicrotic
notch (see figure Benson and explanation of the cause Benson).

Ex. 64. Blood Pressure
Monitoring

This Exercise is usually completed during
Lab #2. Review and repeat this Exercise as necessary. [Stethoscope
method only.]

Complete Parts A and C of the Lab Report (Benson).

Ex. 65. A Polygraph
Study of the Cardiac Cycle

This is the most important material to study
(see Benson's graph). Also refer to the text figure and lecture slides
(Ch. 15).

Biopac Lesson -- ECG and Pulse Measurements

Label the Worksheet handout (page
9 of the Ch14-15 Worksheet deals with ECG).

Complete Part B of the Lab Report (Benson).

Preparation for Lab
Quiz #3 and the Lab Midterm Exam:

Be able to identify heart structures
and major vessels entering and exiting the heart from diagrams,
models, and preserved pig hearts (also cat hearts after we complete Lab
# 4).

Be able to trace the path of blood
into, through, and out of the right and left sides of the heart. Be able
to name heart structures and major vessels when they are
described.

When provided with an ECG tracing:
Be able to identify the PQRST portions. Be able to calculate BPM (heart
rate) whether or not a pulse tracing is provided.

Be able to name the events of the cardiac
cycle and relate them to: components of the ECG tracing, pressure changes
within the various heart chambers, systole and diastole of the ventricles,
the timing of valve openings and closings, etc. [Study the diagram in Hole.]

Who named
it?

Wilhelm
His: 1863-1934. Swiss cardiologist (son
of the renowned anatomist of the same name), who discovered (1893) the
specialized muscle fibers (known as the bundle of His) running along the
muscular partition between the left and right chambers of the heart. He
found that these fibers help communicate a single rhythm of contraction
to all parts of the heart. While a professor of medicine at the University
of Berlin (1907-26), His was one of the first to recognize that the heartbeat
has its origin in the individual cells of heart muscle.